def api_pwm(self, chan, command, option, req_method, req_args): resp = copy.deepcopy(self.CHIP_INFO) resp["connected"] = True # Default the channel to PWM0 # CHIP Pro will support PWM1 cname = "PWM0" chan = int(chan) if chan not in [0]: #,1]: resp["message"] = "Invalid PWM Channel Specified" return jsonify(resp) else: if chan == 0: cname = "PWM0" elif chan == 1: cname = "PWM1" # Figure out our command if command == "start" and req_method == 'GET': # Load the overlay OM.load(cname) # Get the arguments duty_cycle = req_args.get('duty_cycle', 25.0) frequency = req_args.get('frequency', 200.0) polarity = req_args.get('polarity', 0) # Start the PWM PWM.start(cname, duty_cycle, frequency, polarity) resp[ "message"] = "Setting {0} to duty cycle: {1}, frequency: {2}, and polarity {3}".format( cname, duty_cycle, frequency, polarity) elif command == "stop" and req_method == 'GET': PWM.stop(chame) resp["message"] = "Stopping {0}".format(cname) elif command == "cleanup" and req_method == 'GET': # TODO: Handle per channel cleanup PWM.cleanup() OM.unload(cname) resp["message"] = "Cleaning up and unloading {0}".format(cname) elif command == "duty_cycle" and req_method in ['GET', 'PUT', 'POST']: PWM.set_duty_cycle(cname, float(option)) resp["message"] = "Changing duty cycle on {0} to {1}".format( cname, option) elif command == "frequency" and req_method in ['GET', 'PUT', 'POST']: PWM.set_frequency(cname, float(option)) resp["message"] = "Changing duty cycle on {0} to {1}".format( cname, option) return jsonify(resp)
def test_pwm_freq_non_setup_key(self): with pytest.raises(ValueError): PWM.set_frequency("P9_15", 100)
def test_pwm_freq_non_setup_key(self): with pytest.raises(RuntimeError): PWM.set_frequency("PWM0", 100)
def test_pwm_frequency_invalid_value_string(self): PWM.start("PWM0", 0) with pytest.raises(TypeError): PWM.set_frequency("PWM0", "11") PWM.cleanup()
def test_pwm_frequency_invalid_value_negative(self): PWM.start("PWM0", 0) with pytest.raises(ValueError): PWM.set_frequency("PWM0", -1) PWM.cleanup()
GPIO.output("XIO-P0", GPIO.HIGH) GPIO.output("XIO-P1", GPIO.LOW) print("Testing duty cycle...") # Test duty cycle # for x in range(0,100): # SPWM.set_duty_cycle("PWM0", x) # print(x) # time.sleep(.1) # Test frequency PWM.set_duty_cycle("PWM0", 100) print("Testing frequency at 100% duty") for f in range(100, 5000, 100): PWM.set_frequency("PWM0", f) print(f) time.sleep(.1) # Hold at high print("Holding high") PWM.set_duty_cycle("PWM0", 100) PWM.set_frequency("PWM0", 5000) time.sleep(3) except: print("An error hath occurred.") # Cleanup afterwards PWM.stop("PWM0")
def test_pwm_freq_non_setup_key(self): with pytest.raises(ValueError): PWM.set_frequency("P9_15", 100) PWM.cleanup()
def test_pwm_freq_non_setup_key(self): with pytest.raises(RuntimeError): PWM.set_frequency("PWM0", 100) PWM.cleanup()
def test_pwm_frequency_invalid_value_string(self): PWM.start("PWM0", 0) with pytest.raises(TypeError): PWM.set_frequency("PWM0", "11") PWM.cleanup()
def test_pwm_frequency_invalid_value_negative(self): PWM.start("PWM0", 0) with pytest.raises(ValueError): PWM.set_frequency("PWM0", -1) PWM.cleanup()